1328444 has 24 divisors (see below), whose sum is σ = 2551920. Its totient is φ = 601344.

The previous prime is 1328417. The next prime is 1328447. The reversal of 1328444 is 4448231.

It is a super-2 number, since 2×1328444² = 3529526922272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2852 + ... + 3284.

It is an arithmetic number, because the mean of its divisors is an integer number (106330).

2^1328444 is an apocalyptic number.

It is an amenable number.

1328444 is a deficient number, since it is larger than the sum of its proper divisors (1223476).

1328444 is a wasteful number, since it uses less digits than its factorization.

1328444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509 (or 507 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

The square root of 1328444 is about 1152.5814504841. The cubic root of 1328444 is about 109.9295416558.

The spelling of 1328444 in words is "one million, three hundred twenty-eight thousand, four hundred forty-four".